<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1405-3195</journal-id>
<journal-title><![CDATA[Agrociencia]]></journal-title>
<abbrev-journal-title><![CDATA[Agrociencia]]></abbrev-journal-title>
<issn>1405-3195</issn>
<publisher>
<publisher-name><![CDATA[Colegio de Postgraduados]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-31952017000300329</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Variabilidad genética de Xanthomonas fragariae y su severidad en genotipos de fresa (Fragaria×ananassa Duch)]]></article-title>
<article-title xml:lang="en"><![CDATA[Xanthomonas fragariae genetic variability and its severity on strawberry genotypes (Fragaria×ananassa Duch)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Zabala]]></surname>
<given-names><![CDATA[Noemí]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ochoa-Martínez]]></surname>
<given-names><![CDATA[Daniel L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas-Martínez]]></surname>
<given-names><![CDATA[Reyna I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Martínez]]></surname>
<given-names><![CDATA[Douglas]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aranda-Ocampo]]></surname>
<given-names><![CDATA[Sergio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zapién-Macías]]></surname>
<given-names><![CDATA[José M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[Montecillo Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Investigación Aplicada-Driscoll&#8217;s México  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>05</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>05</month>
<year>2017</year>
</pub-date>
<volume>51</volume>
<numero>3</numero>
<fpage>329</fpage>
<lpage>341</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-31952017000300329&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-31952017000300329&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-31952017000300329&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Xanthomonas fragariae es el agente causal de la mancha angular de la hoja en fresa (Fragaria×ananassa Duch) y es un microorganismo sujeto a cuarentena para la movilización y transporte de material vegetal de propagación en varios países. En México, la información sobre la diversidad genética del patógeno y su severidad en variedades comerciales es desconocida. Este estudio tuvo como objetivo conocer la variabilidad genética de X. fragariae y evaluar su severidad en diferentes materiales genéticos de fresa. Para ello se realizó un análisis filogenético con secuencias parciales de los genes hrp y gyrB de 14 aislamientos de X. fragariae recolectados en localidades productoras de los estados de Michoacán, Jalisco y Puebla, México. El árbol filogenético mostró similitud de 99 % entre los aislamientos analizados. Con el propósito de contar con genotipos de fresa, con resistencia a X. fragariae para uso comercial y en programas de mejoramiento genético, se inoculó por inyección y aspersión una suspensión de X. fragariae en dos variedades comerciales y cinco genotipos y se evaluó la severidad de los síntomas mediante una escala diagramática. Los genotipos de fresa FragLa y FragMa tuvieron los valores menores de severidad. Este es el primer estudio sobre la variabilidad genética de X. fragariae y de su severidad en genotipos de fresa en México.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Xanthomonas fragariae is the causative agent of the angular leaf spot of strawberries (Fragaria×ananassa Duch). This microorganism is subject to quarantine for the mobilization and transport of propagation plant material in several countries. There is no information about the pathogen&#8217;s genetic diversity and its severity on commercial varieties in Mexico. The objective of this study was to find out X. fragariae&#8217;s genetic variability and evaluate its severity on different strawberry genetic materials. To achieve this, a phylogenetic analysis was carried out with partial sequences of the hrp and gyrB genes from 14 X. fragariae isolates collected from production locations in the Mexicans states of Michoacán, Jalisco, and Puebla. The phylogenetic tree showed 99 % similarity among the isolates analyzed. In order to obtain X. fragariae-resistant strawberry genotypes, for commercial use and in genetic improvement programs, a X. fragariae suspension was inoculated, injected and sprayed, in two commercial varieties and five genotypes. The symptom severity was evaluated using a diagrammatic scale. FragLa and FragMa strawberry genotypes showed the lowest severity values. This is the first study in Mexico about the X. fragariae&#8217;s genetic variability and its severity on strawberry genotypes.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Xanthomonas fragariae]]></kwd>
<kwd lng="es"><![CDATA[Fragaria×ananassa]]></kwd>
<kwd lng="es"><![CDATA[hrp]]></kwd>
<kwd lng="es"><![CDATA[gyrB]]></kwd>
<kwd lng="es"><![CDATA[escala diagramática de severidad]]></kwd>
<kwd lng="en"><![CDATA[Xanthomonas fragariae]]></kwd>
<kwd lng="en"><![CDATA[Fragaria×ananassa]]></kwd>
<kwd lng="en"><![CDATA[hrp]]></kwd>
<kwd lng="en"><![CDATA[gyrB]]></kwd>
<kwd lng="en"><![CDATA[diagrammatic severity scale]]></kwd>
</kwd-group>
</article-meta>
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